Mayan gather in front of the Kukulkan Pyramid in Chichen Itza, Mexico, Thursday, Dec. 20, 2012. A Mexican Indian seer who calls himself Ac Tah, and who has traveled around Mexico erecting small pyramids he calls "neurological circuits," said he holds high hopes for Dec. 21. "We are preparing ourselves to receive a huge magnetic field straight from the center of the galaxy," he said. (AP Photo/Israel Leal)